Method of manufacturing lubricant-receiving devices for driven parts.



No- 806,569. 'PATENTED DEG.5, 1905.

W. J. REID. 7 7 METHOD OF MANUFACTURING LUBRICANT RECEIVING DEVICES FOR DRIVEN PARTS.

APPLIOATION 1 11. 1) lunar. 1905.

Wz Enesses.-- 17214272102" W ZflZZaa77Z wZZez'aZ munlw. a. qnmm 00.. Pnomumuunnusns msummou u c UNITED. STATES PATENT OFFICE. 'WILLIAMJAMES REID, oF'woofDswn PARK, ENGLAND. METHOD OF MANUFACTURING LUBRICANT-RECEIVING DEVICES ,FOR DRIVEN PARTS.

Specification. of Letters Patent.

Patented Dec. 5, 1905.

Application filed March 7,1905. Serial No. 248,804.

To a, when 1 it may concern.-

Be it known that I, WILLIAM J AMES REID, a subject of the King of Great Britain, residing at WoodsidePark, in the county of Middlesex, England, have invented new and useful Improvements in Methods of Manufacturing Lubricant-Receiving Devices for Driven Parts,

of which the following is a specification.

This invention relates to the manufacture or production of certain portions of lubricantereceiving devices of a particular type for automatically effecting. lubrication ofrotary hearing parts of mechanism such as sheaves, pulleys, and other wheels designed for rotation on shafts or axles and bearings for reception of rotatory shafts and axlesthe particular type referred to being that in which a receptacle for oil is made in a part of the mechanism and packing to which the oil is free to pass is contained in grooves nearly circular in crosssection and parallel to the axis of the shaft or axle and formed in a part contiguous to the bearing-surface, so thatthe said packingis in contact with the bearing-surface to which the oil absorbed by and percolating the packing consequently passes.

The said invention consists of the novel method of production and packing of the said grooves hereinafter described with reference -to the accompanying drawings, by which ing, or drilling'portions of the metal in which they have been formed, together with portions of the packing therein, so as to convert the packed holes into grooves having the shape of troughs with contracted mouths and having in transverse section the figure of an arc of a circle greater than a semicircle and by the same operation to shape the packing in the said holes as required to provide for proper fitting of the exposed portion thereofon the bearing part to be lubricated.

The said invention is further described with reference to the accompanying drawings, Figures l and 2 of which are sections taken at right angles to each other, illustrating the hub and proximate parts of a bushed pulley furnished with means for automatic lubrication of the type or general character hereinbefore described comprising packed grooves produced according to'the sa1d invention. Fig.3 1s a separate end view of the bush of the said pulley at a certain stage of its manufacture. Fig." l is aside view of an instrument specially designed for cutting leather to the shape required according to this invention; and Fig. 5 is a section of the'said instrument, taken on the line A, Fig. 4:. Fig. 6 illustrates a bearing for a truck axle provided with packing grooves produced according to the said invention.

Referring to Figs. 1 and 2, a is the hub, and b b are chambers for reception of the oil for lubrication, which chambers are connected by passages 0 0. d is the passage for introduction of the lubricant, and e is the bush, which fits the hub and is secured therein as usual. ff are passages forming communications between the oil-chambers b I) and the aforesaid grooves, which are filled with leather packing g g.

All the aforesaid parts are formed and produced in the ordinary manner, with the exception of the said packed grooves, which are produced as hereinafter particularly described with reference to Fig. 3 and partly by use of the special instrument hereinbefore referred to. The said Fig. 3 illustrates in end view aplain hollow cylindrical casting turned externally to the size required to fit the central hollow of the pulley-hub a and having the aforesaid passages ff formed in it, the bore or interior of the said casting being still in the rough state. In this casting grooves of the sectional shape of those occupied by the leather packings (illustrated at g g in Fig. 2) are produced according to this invention and packed with leather in the following manner: Parallel with and equidistant from the axis of the cylinder circular holes are drilled, as indicated by the broken lines it h, the said holes extending completely through the walls of the cylinder from end to end,the radial positions of the said holes being such that a disk of the diameter of the shaft which the bush is to fit will when placed concentrically on the end of the bush cover a portion of the\ metal in which the holes are drilled equal to about onefourth their circumference, as indicated by the broken-line circle-71, Fig. 3. 'Into each of the said holes a portion of a thong of leather of cylindrical shapec'. a, circular in trans- IIO verse seetion-and of slightly greater diameter than the said holes is then forced, so as to completely fill each of them from end to end, and on this being accomplished the interior of the casting is by drilling or boring or turning or otherwise sufiiciently enlarged to properly fit the pulley-shaft, the efiect of which operation is to open communications between the leather-packed holes and the shaft bore or hollow of the bush and at the same time to cut away those portions of the leather packing which lie within the radius of the shaft-bore, the cut faces so produced of the leather packing thus forming portions of the cylindrical interior of the bush, which is then ready for insertion in the pulley-hub.

The leather for the packings g 9 may be conveniently shaped, as required by use of the instrument illustrated in Figs. 4 and 5, which instrument consists of a steel tube j, having at one end a cutting edge 70 and secured in a stock Z, a tubular portion in of which acts as a guide for the leather when the instrument is in use. In preparing thongs for the said packings with the aid of the said instrument strips approximately squarein section are cut from a hide somewhat thicker than the required diameter of the thongs, and one end of each of such strips is reduced sufliciently to permit of its passage through the cuttertube 7', and the end so reduced is passed through the tubular guide in of the aforesaid instrument and thence through the said cuttertube. The projecting end is then gripped and the whole strip drawn through the said instrument, and thereby shaped as required. By this means packings for useaccording to this invention may be readily cut clear of the hard outer surface of the hide, which is less porous and absorbent than the inner part and the presence of which on the packings is therethe manner hereinbefore described to the production of such packed grooves generally, whether they be formed 1n solid or split bushes or in bushes constituting rotary or, stationary bearing parts or in bearings not provided with separable bushes such, for instance, as axlebearings for trucks, a bearing of which kind provided with such packed grooves is illustrated in side view in Fig. 6 of the accompanying drawings;

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is A method of manufacturing alubricant-receiving device consisting in providing a hollow rotating member with e,\ *lindrical openings parallel with the axis thereof, inserting thongs of leather in the said openings so as to completely fill the same, and then boring away the inner face of said member throughout so as to expose the said leather and thereby form the member with a composite inner face.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

lVILLIAM JAMES REID.

Witnesses:

H. D. JAMESON, A. NUTTING. 

